"We showed ourselves we can play with the top guys consistently and perform well at the big tournaments."
Venus and Klaasen fought back from a set down twice in the final on Sunday morning (NZ time), but were unable to take the deciding set, with Sock and Bryan winning 6-3 6-7 6-3 5-7 7-5 in just over three and a half hours.
Tension built throughout the deciding set as neither team were able to get an early break. But a 5-5 the blow came for the Americans, breaking Klaasen's serve and going on to close out the match in the following game.
On championship point, there was an exchange at the net which ended when Klaasen put a volley into the net to end a hard-fought final.
It ended a successful tournament for Venus, despite walking away without the title, as he also made the semifinals in the mixed doubles with Katarina Srebotnik of Slovenia.
All up, the Kiwi played 36 sets in the last fortnight, collecting $247,000 in prize money.
"I've played a lot of set the last two weeks," Venus said. "Now that we've finished I'm a little bit tired, but I'm really happy with how my body held up...that didn't play a factor in fading at the end or anything."
Venus was now looking forward to a week or two of rest, before getting into preparation for the US Open at the end of August.
He and Klaasen were likely to return to the courts at the Citi Open in Washington at the end of July, before heading north for the Rogers Cup in Toronto in early August and on to the western & Southern Open in Cincinnati the week after.
"There's three great opportunities in a row then we'll take a week off and practice in New York and get ready for the US Open.
"There's plenty of tennis left to be played for the rest of the year and some great opportunities still in front of us."
